Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN: 9780134746241
Author: Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher: PEARSON
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You find some zircon crystals in a granite outcrop in Wyoming. Using the
U235 Pb207 system you perform a chemical analysis and find that the
sample contains 3.125% U235. Based on the analysis, how many half-lives
have elapsed?
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Transcribed Image Text:You find some zircon crystals in a granite outcrop in Wyoming. Using the U235 Pb207 system you perform a chemical analysis and find that the sample contains 3.125% U235. Based on the analysis, how many half-lives have elapsed?
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